QuickFacts

Median household income of Maricopa County, Arizona is

$54,229

21.3%

of persons in Florida are under 18 years

The population of Pennsylvania is

12,784,227

Population per square mile in Illinois is

231.1

11.4%

of persons in San Diego County, California are 65 years and over

26.4%

of persons in Maricopa County, Arizona are under 18 years

Population per square mile in New York city, New York is

27,012.5

Population per square mile in Chicago city, Illinois is

11,841.8

Population per square mile in Ohio is

282.3

23.7%

of persons in Cook County, Illinois are under 18 years

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census